KR20090000019A - Successive data processing method and apparatus by information exchange - Google Patents

Abstract

A method and an apparatus for holding data processing continuity through information exchange are provided to enable a data management device to authenticate a data processing device when the data processing device and the data management device are connected to each other, and apply processing right information capable of processing the processing object data of the authenticate data processing device, thereby processing data safely and reliably. A processing object data is selected. The processing object information of the selected processing object data is transmitted to a data management device. Processing right information based on the processing object information is received from the data management device. The processing object data is processed on the basis of the processing right information(S816). Processing status information according to the processed processing object data is transmitted to the data management device(S818).

Description

Method and apparatus for securing data processing continuity through information exchange {Successive data processing Method and Apparatus by information exchange}

1 shows a structure of a data processing apparatus for explaining an embodiment of the present invention.

2 shows a structure of a data processing apparatus for explaining an embodiment of the present invention.

3 shows a structure of a data processing apparatus for explaining an embodiment of the present invention.

4 shows a structure of a data processing apparatus for explaining an embodiment of the present invention.

5 shows the structure of a data management apparatus for explaining an embodiment of the present invention.

6 shows a structure of a data management apparatus for explaining an embodiment of the present invention.

Fig. 7 shows a flow chart illustrating the operation of the data processing apparatus for explaining one embodiment of the present invention.

FIG. 8 shows a flow chart illustrating the operation of a data processing apparatus for explaining an embodiment of the present invention.

Fig. 9 shows a flow chart illustrating the operation of the data management apparatus for explaining one embodiment of the present invention.

Fig. 10 shows a flow chart illustrating the operation of the data management apparatus for explaining one embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

100, 200, 300, 400: Data processing device

102, 202, 302, 402: control unit of the data processing apparatus

104, 204, 304, 404: interface unit of the data processing apparatus

106, 206, 306, 406: processing unit of the data processing apparatus

208, 408: display section of the data processing apparatus

310, 410: storage unit of the data processing device

500, 600: Data management device

502, 602: control unit of the data management device

504, 604: interface unit of the data management device

506, 606 storage unit of the data management device

608: Digital rights management unit of the data management device

The present invention relates to a data processing apparatus and a data management apparatus for managing data processed by the data processing apparatus, and more particularly, even when the connection between the data processing apparatus and the data management apparatus is disconnected and reset. The present invention relates to a data processing device and a data management device for enabling a service.

Recently, with the development of various digital devices such as personal computers (PCs), PDAs, digital cameras, MP3 players, PMPs, game machines, digital TVs, DVD players, and the like, the types of data processed by the devices include documents, databases, videos, music, It is becoming diverse to the same digital content.

As the digital data processed by the digital devices are diversified and the data to be processed have a value to be protected, the necessity of safe and legal processing right management is increased. Moreover, with the development of network technology and communication technology, there is a problem that the right of digital data to be copyrighted is violated by the rapid propagation through the network, whether or not the data to be protected has the value to be protected.

Digital rights management (DRM) technology has emerged to protect the digital data as described above. The digital rights management technology is a technology that supports the safety, circulation, and reuse of digital data distribution, and provides a trust structure that can satisfy all agents involved in the digital data lifecycle, including copyright holders, distributors, and consumers.

In the digital rights management technology, the device that stores the data to be processed includes a digital rights management unit so that the device checks the processing authority of the data to be processed and processes the data. However, if a data processing device for processing the data to be processed and a data management device having processing information of the data to be processed exist separately, a technical problem of enabling safe and reliable data processing is required. In addition, there is a request to continue processing from the previously processed portion when the data to be processed by the connection is disconnected and then connected again. In addition, when the two devices are separated as described above, there is a technical problem of making the robustness even in a removable attack.

If the data processing device has all the processing rights and management rights of the data to be processed, the data processing device has past processing information when the data processing device resumes processing and then resumes processing. There was no. However, a problem occurs when a data processing device and a data management device exist as independent devices, and the data processing device is in charge of processing the data to be processed and the right to process the data is in charge. do. That is, in this case, when the two devices are connected to process data and the connection is released and the connection is established again, the data processing device must resume processing of the data previously processed. Therefore, in this case, the data processing apparatus must process the data with continuity from the next position of the previously processed data. This is called a data processing continuity problem. When the two devices are connected to each other and data processing is performed, and the connection between the two devices is released, the data processing device side has a problem of determining whether to continue the data processing operation. In addition, when the processing operation is to be continued according to the determination, the processing right information is received from the data management apparatus every time the processing operation is performed, and the data processing is performed based on the processing right information so that the device is subject to a Removable Attack. There is a need for a method and apparatus for ensuring data processing continuity having robustness.

SUMMARY OF THE INVENTION The present invention has been made to overcome the above problems, and an object of the present invention is that the data management apparatus authenticates the data processing apparatus when the data processing apparatus and the data management apparatus are connected to each other, and the processing of the authenticated data processing apparatus. By granting processing right information that can process the target data, it is possible to enable safe and reliable data processing.

An object of the present invention is to share the data processing state information of the data processing device with the data management device when the data processing device and the data management device is connected to each other when the data is processed in the past when the connection is released and then connected again It is to enable continuous data processing based on the processing position information indicating the processing position of the data.

An object of the present invention is that the data processing device and the data management device is connected to each other when the connection is released by exchanging data processing status information and data processing right information by checking the processing right information of the processing target data on the data processing device side; If the processing right information is not received, the processing operation of the data to be processed is not performed any more, thereby making it robust to the Removable Attack.

According to a preferred embodiment for achieving the above object of the present invention, the process of selecting the processing target data, transmitting the processing target information of the selected processing target data to a data management device and the processing target from the data management device Receiving processing information based on the information, processing the processing target data based on the processing information, and transmitting the processing state information according to the processing status of the processing target data to the data management apparatus; And a data processing continuity securing method through information exchange between data processing apparatuses.

When the data processing apparatus is connected to the data management apparatus, the data processing apparatus transmits data processing apparatus information to the data management apparatus and performs authentication processing by the data management apparatus based on the ID of the data processing apparatus included in the data processing apparatus information. And receiving selection information including processing target information or processing status information from the data management device.

The processing information transmitted from the data management apparatus side to the data processing apparatus includes processing target information, processing status information, processing rights information, and the like, and the processing target information includes an ID of the processing target data, and the processing The status information includes processing completion information or processing position information according to the situation in which the processing target data is processed.

The processing completion information is incomplete when there are more parts to be processed according to the processing result of the processing target data, and when the processing of the processing target data is completed, the processing completion information is processing completion or processing based on the processing completion information. It is the criteria for determining sustainability. In addition, if the processing is completed according to the processing result, the processing completion information is transmitted to the data management device side, or if there is still a subject to be processed, the processing status information so far is transmitted to the data management device.

The processing position information is transmitted to and stored in the data management apparatus side as information for informing the processing state so far when the data processing apparatus side processes the processing target data so as to determine the next processing position and to resume the processing.

The processing right information is information transmitted from the data management device side to the data processing device, and includes information on the processing right data.

When the data processing apparatus is connected to the data management apparatus, the data processing apparatus may transmit a processing target information inquiry message inquiring whether the target data to be processed exists. The data management device generates the selection information corresponding to the data processing device ID in response to the processing target information inquiry message, and the data processing device receives the selection information. The selection information includes processing target information, or processing state information, which informs of the processing data which has not been completed while the data processing apparatus was previously connected to the data management apparatus and processing data.

When the data processing apparatus is connected to the data management apparatus, when selecting target data to be processed, the data processing apparatus may select the data based on the selection information received from the data management apparatus or based on a user input signal.

According to another embodiment of the present invention, a process of receiving processing object information from a data processing device, generating processing information of processing object data based on the processing object information, and transmitting the generated processing information to the data processing device. And a process of receiving processing state information according to the situation of the processing target data processed based on the processing information from the data processing apparatus.

The processing state information includes processing completion information or processing position information, and the operation of generating and transmitting processing information necessary for processing data in the data processing apparatus based on the processing completion information may be completed. Is repeated until.

According to another embodiment of the present invention, an interface unit connected to an external device for interfacing processing data, information or a message, receiving processing data from the interface unit, and processing the processing data based on the processing instruction information; Decrypts the message received through the data processing unit and the interface unit, generates a message in response to the decryption result, transmits the message through the interface unit, generates the processing instruction information for processing the data to be processed, and generates the data processing unit. A data processing apparatus including a control unit which outputs the processing instruction information and transmits processing state information according to a processing result of data processed by the data processing unit to the data management apparatus based on the processing instruction information. do.

The data processing apparatus may further include a display unit configured to display processing state information and processing target information according to a processing operation on the processing target data from the data processing unit.

The data processing apparatus may further include a storage unit configured to receive processing object data, information, and a message from the interface unit, and store the input processing object data, information, and message.

The external device may be a display device connected through the interface unit, and may display processed data, information, or messages generated as a result of data processing.

The external device connected through the interface unit may be a data management device for managing target data of the data processing device.

When the data processing device is connected to the data management device, the control unit transmits a data processing device ID to the data management device through the interface unit and is authenticated by the data management device.

The control unit of the data processing apparatus generates an inquiry message for inquiring whether there is data to be processed on the data management apparatus side, transmits the message to the data management apparatus through the interface unit, and from the data management apparatus through the interface unit. The received selection information may be decrypted, and the processing target data may be selected based on the decrypted selection information, or the processing target data may be selected based on a user input signal.

The control unit decrypts the processing right information of the processing target data received from the data management device, and generates processing instruction information for processing the processing target data when the processing authority is granted. The processing instruction information is transmitted to the data processing unit and processed in accordance with the instructions.

According to another embodiment of the present invention, an interface unit connected to an external device to interface processing object data, information or message, a storage unit storing processing object data, and processing object data, information or message received through the interface unit A control unit for generating the storage instruction information by decoding the data, outputting the storage instruction information to the storage unit, generating processing rights information of the processing target data based on the processing target data, and transmitting the processing rights information to the external device. Provided is a data management device comprising a.

The data management device may further include a digital rights management unit that performs authentication based on the ID of the connected external device or issues processing right information based on the processing target data ID.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, but the present invention is not limited or limited by the embodiments described below.

1 shows a structure of a data processing apparatus for explaining an embodiment of the present invention. Referring to FIG. 1, the data processing apparatus 100 includes a control unit 102, an interface unit 104, and a processing unit 106.

The interface unit 104 is connected to an external device to interface data, information, or messages to be processed.

The processing unit 106 receives the processing target data from the interface unit 104 and processes the processing target data based on the processing instruction information.

The control unit 102 decrypts the message received through the interface unit 104, generates a message in response to the decryption result, transmits it through the interface unit 104, and decodes the processing information received from the external device. Generate processing instruction information for processing data, output processing instruction information generated to the data processing unit 106, and processing state information according to the processing result of the data processed by the data processing unit 106 based on the processing instruction information. Transmits the data to an external device through the interface unit 104.

2 shows a structure of a data processing apparatus for explaining an embodiment of the present invention. Referring to FIG. 2, the data processing apparatus 200 includes a control unit 202, an interface unit 204, a processing unit 106, and a display unit 208.

The interface unit 204 has the same function as the interface unit 104 of FIG.

The processing unit 206 has the same function as the processing unit 106 of FIG.

The display unit 208 displays the processing target data name or the like included in the processing target information processed by the data processing unit 206 or the processing completion information or processing for notifying whether the processing is completed according to the processing status of the processing target data to be processed. Processing position information indicating which part of the target data is being processed is displayed.

The control unit 202 decrypts the message received through the interface unit 204, generates a message in response to the decryption result, transmits it through the interface unit 204, and generates processing instruction information for processing the data to be processed. And outputs the processing instruction information generated to the data processing unit 206, and outputs the processing state information according to the processing result of the data processed by the data processing unit 206 based on the processing instruction information through the interface unit 204. And display indication information instructing the display unit 208 to display processing target information or processing status information and the like.

3 shows a structure of a data processing apparatus for explaining an embodiment of the present invention. Referring to FIG. 3, the data processing apparatus 300 includes a control unit 302, an interface unit 304, a processing unit 306, and a storage unit 310.

The interface unit 304 has the same function as the interface unit 104 of FIG. 1.

The processing unit 306 has the same function as the processing unit 106 of FIG. 1.

The storage unit 310 stores the processing target data received from the external device through the interface unit 304 or stores the processing target data previously stored in the form of a CD, DVD, or memory.

The control unit 302 decrypts the message received through the interface unit 304, generates a message in response to the decryption result, transmits the message through the interface unit 304, and a processing instruction for processing the data to be processed. The interface unit 304 generates information, outputs processing instruction information generated to the data processing unit 306, and processes processing state information according to the processing result of data processed by the data processing unit 306 based on the processing instruction information. It transmits to the external device through, and instructs the processing unit 306 to read the processing target data from the storage unit 310.

4 shows a structure of a data processing apparatus for explaining an embodiment of the present invention. Referring to FIG. 4, the data processing apparatus 400 includes a control unit 402, an interface unit 404, a processing unit 406, a display unit 408, and a storage unit 410.

The interface unit 404 has the same function as the interface unit 104 of FIG. 1.

The processing unit 406 has the same function as the processing unit 106 of FIG. 1.

The display unit 408 has the same function as the display unit 208 of FIG. 2.

The storage unit 410 has the same function as the storage unit 310 of FIG. 3.

The control unit 402 decrypts the message received through the interface unit 404, generates a message in response to the decryption result, transmits the message through the interface unit 404, and a processing instruction for processing the data to be processed. Generates the information, outputs the processing instruction information generated to the data processing unit 406, and processes the processing unit information according to the processing result of the data processed by the data processing unit 406 based on the processing instruction information. Transmits to the external device via the display unit 408, generates and outputs display instruction information instructing the display unit 408 to display the processing target information or the processing status information, and reads the processing target data from the storage unit 410 to process the processing unit 406. Instructs to process from.

5 illustrates a structure of a data management apparatus for explaining an embodiment of the present invention. Referring to FIG. 5, the data management apparatus 500 includes a control unit 502, an interface unit 504, and a storage unit 506.

The interface unit 504 is connected to an external device to interface data, information, or a message to be processed.

The storage unit 506 receives the processing target data from an external device through the interface unit 504, or stores external device information, a message, and the like.

The control unit 502 decrypts the processing target data, information, or message received through the interface unit 504, generates storage instruction information in response to the decryption result, and outputs the storage instruction information to the storage unit 506. The processing information of the processing target data is generated based on the processing target data, and the processing information is transmitted to the external device through the interface unit 504.

6 shows a structure of a data management apparatus for explaining an embodiment of the present invention. Referring to FIG. 6, the data management apparatus 600 includes a control unit 602, an interface unit 604, a storage unit 606, and a digital rights management unit 608.

The interface unit 604 has the same function as the interface unit 504 of FIG. 5.

The storage unit 606 has the same function as the storage unit 506 of FIG. 5.

The digital rights management unit 608 performs authentication based on the ID of the external device connected through the interface unit 604 or issues processing right information based on the ID of the processing target data selected by the external device.

The control unit 602 decodes the processing target data, information, or message received through the interface unit 604, and generates a message or storage instruction information in response to the decryption result and stores the storage instruction information to store in the storage unit 606. And outputs the processing information including the processing right information issued by the digital rights management unit 608 to the external device through the interface unit 604.

Fig. 7 shows a flow chart illustrating the operation of the data processing apparatus for explaining one embodiment of the present invention. Referring to FIG. 7, the data processing device may be connected to an external device through an interface unit, and the external device may be a data management device having a function of managing data to be processed. The data processing device connected to the data management device selects the processing target data (S702). The processing target information corresponding to the selected processing target data is transmitted to the data management apparatus (S704). The processing target information includes information such as a processing target data ID, a processing target data name, a size, and a type, referring to [Table 1] below.

TABLE 1

Processing Information Information to be processed Processing status information Processing Rights Information Target Data ID Processing completed information Processing location information Processing Rights Information

Based on the processing target information, the processing information of the processing target data transmitted from the data management device is received (S706). The processing unit of the data processing apparatus processes the processing target data based on the processing information (S708). The processing state information is generated according to the processing result of the processing target data. The processing state information includes the processing completion information for knowing whether the processing is completed and the processing position information for knowing how much the processing target data is processed, referring to [Table 1]. The processing position information is shared with the data management apparatus and referred to when performing the processing operation of the data to be processed, and becomes information for determining the processing position.

The generated processing state information is transmitted to the data management apparatus (S710), it is confirmed whether the processing is completed (S712), and the processing of the data to be processed is completed.

When the processing is not completed, the processing completion information includes an incomplete attribute indicating that the processing is not completed, and processing completion attribute when the processing is completed. If the processing is not completed, processing status information including processing position information indicating the current processed position or the position to be processed in the next processing operation is transmitted to the data management apparatus. The processing of the processing target data (S708), the processing state information transmission (S710), and checking whether the processing is completed (S712) is repeated until the processing of the processing target data is completed (S714). The data processing apparatus operating as described above may complete the processing of the processing target data based on the received processing right information even if the connection is released. Therefore, in order to prevent further processing when the connection is released, the processing information received from the data management apparatus is inspected before performing the processing of the processing target data (S708), and when the processing right information is received, the processing operation is performed. Otherwise, it is possible to end the processing operation.

Fig. 8 shows a flow chart illustrating the operation of the data processing apparatus for explaining one embodiment of the present invention. Referring to FIG. 8, the data processing apparatus is connected to the data management apparatus through the interface unit in operation S802. The data processing apparatus transmits its own device information, that is, data processing apparatus information, to the data management apparatus (S804). Referring to Table 2 below, the data processing device information includes information such as a data processing device ID, a data processing device manufacturer, or a data processing device type.

TABLE 2

Data Processing Device Information Data Processing Unit ID Data processing device manufacturer Data processing device type

The data processing apparatus receives selection information transmitted from the data management apparatus side (S808). The selection information includes the processing target information or the processing status information, referring to [Table 3] below.

TABLE 3

Selection Information Information to be processed Processing status information

The selection information may be received by the data processing apparatus by generating and transmitting the data based on the data device information authenticated by the data management apparatus, but the data processing apparatus transmits the data processing apparatus information (S804), and the data management apparatus. When connected in the past, the processing object information inquiry message inquiring whether there is the processing object data that has not been processed may be transmitted (S806).

The data processing apparatus may select data to be processed from among data that has not been processed based on the selection information, or may select data to be processed based on a user input signal. When the processing target data is selected (S810), the processing target information transmission (S812) of generating processing target information and reporting it to the data management apparatus is performed.

The data processing apparatus receives the processing information including the processing right information including the processing authority of the processing target data from the data management apparatus (S814). Based on the processing right information, the processing target data is processed based on the processing instruction information instructed by the control unit to the processing unit (S816), and processing state information is generated according to the processing state. The generated processing state information is transmitted to the data management apparatus (S818), and it is confirmed whether the processing is completed (S820).

Processing of the processing target data is completed based on the processing completion information included in the processing state information.

If the processing is not completed, the processing completion information includes attribute information indicating that the processing is incomplete, and the processing status information including processing position information indicating the current processing position or the position to be processed in the next processing operation is the data management apparatus. Is sent to. The processing of the processing target data (S816), the processing state information transmission (S818), and checking whether the processing is completed (S820) is repeated until the processing of the processing target data is completed (S822). The data processing device operating as described above may continue to complete the processing of the data to be processed based on the received processing right information even when the connection is released. Therefore, in order to prevent further processing when the connection is released, the processing information received from the data management apparatus is inspected before the processing target data processing (S816), and the processing right information is received (S814). It is also possible to execute the processing or otherwise terminate the processing operation.

Fig. 9 shows a flow chart illustrating the operation of the data management apparatus for explaining one embodiment of the present invention. Referring to FIG. 9, the data management device is connected to an external device through an interface unit, and the external device may be a data processing device that functions to process data to be processed. The data management device connected to the data processing apparatus receives the processing target information for knowing the processing target data (S902). Based on the processing target data ID of the processing target information, processing information as shown in [Table 1] is generated (S904), and the processing information is transmitted to the data processing apparatus (S906). By receiving the processing state information generated by the data processing apparatus (S908) and storing it in the storage unit, the processing position information is shared between the data management apparatus and the data processing apparatus according to the processing status of the data to be processed. Based on the processing completion information included in the processing state information, it may be checked whether the processing target data is completed (S910). Therefore, based on the processing completion information, receiving the processing state information (S908), processing completion confirmation (S910) operation is repeated until the processing is completed.

Even if the data management device operating as described above is disconnected from the data processing device, the processing of the data to be processed may continue based on the transmitted processing right information. Therefore, in order to prevent further processing when the connection is released, the data processing apparatus receives the processing by repeating the operation of transmitting the processing information to the data processing apparatus (S906) before performing the processing state information receiving operation (S908). If a processing operation is performed based on the information and no processing information is received, the method may be terminated.

Fig. 10 shows a flow chart illustrating the operation of the data management apparatus for explaining one embodiment of the present invention. Referring to FIG. 10, the data management apparatus is connected to the data processing apparatus through an interface unit (S1002). The data management apparatus receives the data processing apparatus information from the data processing apparatus (S1004) and authenticates the data processing apparatus based on the data processing apparatus ID included in the received data processing apparatus information (S1006).

The data management device creates a list by searching for any data that has not been processed when connected in the past based on the data processing device ID, and generates and transmits selection information so that the data processing device can decide whether to resume processing (S1010). )can do. The selection information includes processing target information or processing status information as shown in [Table 3]. Before the selection information transmission (S1010) step, the data management device may receive a processing target information inquiry message for inquiring whether there is processing target data that has not been processed from the data processing apparatus (S1008). The processing target information inquiry message is decrypted by the control unit of the data management apparatus, and generates selection information corresponding to the decryption result processing target data ID and transmits it to the data processing apparatus.

When the data management apparatus receives the processing target information of the selected processing target data from the data processing apparatus (S1012), the control unit of the data management apparatus generates the processing right information including the processing authority of the processing target data, or includes a digital rights management unit. In the case of the data management device, the processing information including the processing right information issued by the digital rights management unit is transmitted to the data processing apparatus through the interface unit at the instruction of the control unit (S1014).

The data management apparatus receives the processing state information generated according to the processing status of the processing target data processed by the data processing apparatus (S1016).

When the processing state information is received (S1016), the processing state information is stored in the storage unit and the processing is completed based on the processing completion information included in the processing state information (S1018).

As described above, the data management apparatus shares the processing position information included in the processing state information received from the data processing apparatus.

The data management apparatus repeats the operation of receiving the processing status information based on the received processing completion information (S1016) and processing completion confirmation (S1018) until the processing is completed.

Even if the data management device operating as described above is disconnected from the data processing device, the processing of the data to be processed may continue based on the transmitted processing right information. Therefore, when the connection is released, the data processing apparatus receives the processing by repeating the operation of transmitting the processing information to the data processing apparatus (S1014) before performing the processing state information receiving operation (S1016) in order to prevent further processing. It is also possible to perform a processing operation based on the information or otherwise terminate the processing operation.

According to another embodiment of the present invention, a data management apparatus includes a storage unit for storing ID of processing target data of a data processing apparatus physically separated from the data management apparatus, and processing position information of the processing target data; And a control unit which, when reconnected with the data management device, transmits the ID of the data to be processed and the processing position information of the data to be processed to the data management device.

The data processing device transmits its ID and the ID of the data to be processed or to be processed to the data management device. Then, the data management apparatus stores the ID of the processing target data in the storage unit corresponding to the ID of the data processing apparatus. The data management apparatus authenticates the data processing apparatus, and transmits the processing target data corresponding to the processing target data ID to the data processing apparatus partly. The data processing apparatus processes the processing target data received from the data management apparatus. The data processing apparatus transmits the processing position information of the processing target data to the data management apparatus every time the processing target data is processed by a predetermined unit. For example, the data to be processed may be moving picture data, and in this case, the data processing device may increase the processing location information by 1 and transmit the moving location information to the data management device every 10 MB. Then, the data management apparatus stores the processing position information in the storage unit corresponding to the ID of the data processing apparatus.

According to another embodiment of the present invention, the data to be processed may not be transmitted from the data management device to the data processing device, but may be stored in the data processing device from the beginning. In this case, the data management apparatus may transmit the authority for the portion of the processing target data to the data processing apparatus so that the data processing apparatus may process the processing target data partly. For example, when the data processing apparatus receives a right to play the first 50MB of the moving image data 400MB from the data management device, the 50MB may be played. At this time, the data processing apparatus may increase the processing position information by 1 every time the moving image data is played back by 10MB and transmit the data to the data management apparatus. Then, the data management apparatus stores the processing position information in the storage unit corresponding to the ID of the data processing apparatus.

When the data management device is reconnected after disconnecting from the data processing device, the data management device identifies the ID of the data processing device. Then, the data management apparatus identifies the ID of the processing target data of the data processing apparatus and the processing position information of the processing target data with reference to the ID of the data management apparatus. An ID of the identified processing target data and the processing position information of the processing target data are transmitted to the data processing apparatus. Then, the data processing apparatus determines what data it has been processing based on the received ID of the processing target data, and subsequently processes the processing target data with reference to the processing position information of the data. For example, when the data to be processed is a moving picture, the data processing apparatus may reproduce the data to be processed from where it was interrupted.

As described above, although described with reference to a preferred embodiment of the present invention those skilled in the art of the present invention described in the following claims, including various forms of configuration that can achieve the effect of the present invention It will be understood that various modifications and variations can be made in the present invention without departing from the spirit and scope.

According to the present invention, when the data processing device and the data management device are connected to each other, the management device authenticates the processing device and grants the processing right of the data to be processed, thereby enabling safe and reliable data processing.

According to the present invention, when the data processing apparatus and the data management apparatus are connected to each other to process data, the connection state is disconnected and then reconnected by sharing processing state information according to the data processing result of the data processing apparatus with the data management apparatus. In this case, continuous data processing is possible based on the processing position information of the data to be processed previously.

According to the present invention, even if the data processing apparatus and the data management apparatus are connected to each other and the connection is released by sharing the processing state information and the processing right information of the data to be processed, the data processing apparatus checks the processing right information to separate the device separation attack It also has robustness against Removable Attack.

Claims (25)

In the method of ensuring data processing continuity by exchanging information between a data management device and a data processing device, Selecting data to be processed; Transmitting the processing target information of the selected processing target data to the data management apparatus; And Receiving processing right information based on the processing target information from the data management device, processing the processing target data based on the processing right information, and managing the processing state information according to the situation of the processed processing target data. The process of transferring to the device Method for ensuring data processing continuity through information exchange, comprising a. The method of claim 1, The data processing device further includes the step of transmitting data processing device information to the data management device when the data processing device is connected, and receiving selection information authenticated according to the data processing device information. How to secure data processing continuity through The method of claim 2, And the data processing device information includes an ID of the data processing device. The method of claim 1, And the processing target information includes an ID of the processing target data. The method of claim 1, And said processing state information includes processing completion information or processing position information of said processing target data. The method of claim 5, And a processing position of the data to be processed is determined based on the processing position information. The method of claim 5, And said processing completion information is a criterion for determining data processing or transmission of said processing state information. The method of claim 1, And transmitting the processing subject information inquiry message to the data management apparatus and receiving the selection information of the processing subject data in response to the processing subject information inquiry message from the data management apparatus. How to secure data processing continuity through The method according to claim 2 or 8, And the data to be processed is selected based on the selection information received from the data management device. The method of claim 1, And the data to be processed is selected based on a user input signal. In the method of ensuring data processing continuity by exchanging information between a data processing device and a data management device, Receiving processing object information of the object data from the data processing device; Generating processing rights information of the processing target data based on the processing target information, and transmitting the generated processing rights information to the data processing apparatus; And Receiving processing state information according to the situation of the processing target data processed based on the processing right information from the data processing apparatus; Method for ensuring data processing continuity through information exchange, comprising a. The method of claim 11, The processing state information includes processing completion information or processing position information, and the operation of generating the processing information necessary for processing data in the data processing apparatus based on the processing completion information and transmitting the processing information to the data processing apparatus is performed. A method of ensuring data processing continuity through information exchange, characterized in that the process is repeated until the processing of the target data is completed. An interface unit connected to an external device to interface data, information, or messages to be processed; A data processing unit which receives data from the interface unit and processes the processing target data based on processing instruction information; And Decrypts the message received through the interface unit, generates a message in response to the decryption result, transmits the message through the interface unit, generates the processing instruction information for processing the processing target data, and processes the processing unit in the data processing unit. And a control unit which outputs instruction information and transmits processing state information according to a processing result of data processed by the data processing unit to an external device based on the processing instruction information. The method of claim 13, And a display unit which displays the processing state information and the information of the processing target data in accordance with a processing operation on the processing target data from the data processing unit. The method according to claim 13 or 14, And a storage unit configured to receive the processing target data, information or message from the interface unit, and store the input processing target data, information, and message. The method of claim 13, And the external device is a display device. The method of claim 13, And the external device is a data management device. The method of claim 17, And the control unit transmits a data processing apparatus ID to the data management apparatus through the interface unit. The method of claim 17, The control unit generates a processing target data inquiry message, transmits the inquiry message to the data management apparatus through the interface unit, decrypts the selection information received from the data management apparatus through the interface unit, and based on the selection information. And selecting data to be processed. The method of claim 13, The controller selects the processing target data based on a user input signal. An interface unit connected to an external device to interface data, information, or messages to be processed; A storage unit for storing processing target data; And Decode processing data, information or message received through the interface unit to generate storage instruction information, and store the processing target data in the storage unit according to the storage instruction information, the processing target data based on the processing target data And a control unit which generates the processing right information of the control unit and transmits the processing right information to an external device through the interface unit. The method of claim 21, And a digital rights management unit for authenticating an external device or issuing processing rights information of the data to be processed. In the data management device, A storage unit which stores ID of processing target data of the data processing apparatus physically separated from the data management apparatus and processing position information of the processing target data; And A controller for transmitting the ID of the processing target data of the data processing apparatus and the processing position information of the processing target data to the data processing apparatus when reconnected with the data processing apparatus; Data management device comprising a. The method of claim 23, wherein the storage unit, And the processing position information of the processing target data and the processing position information of the processing target data corresponding to the ID of the data processing apparatus. The method of claim 24, wherein the control unit, When reconnected with the data processing apparatus, the ID of the processing target data of the data processing apparatus and the processing position information of the processing target data are identified by referring to the ID of the data processing apparatus. .

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